Document how ~/.ssh/known_hosts is used during replication
Document how ~/.ssh/known_hosts is used during replication

Signed-off-by: Shawn O. Pearce <f3ea74d906fa9fe97c1fef6bad9cb871485c7045@google.com>

joshuawilson/merrit,renchaorevee/gerrit,gracefullife/gerrit,catrope/gerrit,makholm/gerrit-ceremony,dwhipstock/gerrit,midnightradio/gerrit,teamblueridge/gerrit,gcoders/gerrit,qtproject/qtqa-gerrit,gcoders/gerrit,basilgor/gerrit,Overruler/gerrit,Seinlin/gerrit,duboisf/gerrit,TonyChai24/test,thinkernel/gerrit,keerath/gerrit_newssh,anminhsu/gerrit,zommarin/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit-attic,atdt/gerrit,Distrotech/gerrit,hdost/gerrit,bpollack/gerrit,bootstraponline-archive/gerrit-mirror,anminhsu/gerrit,gcoders/gerrit,catrope/gerrit,Seinlin/gerrit,bootstraponline-archive/gerrit-mirror,evanchueng/gerrit,atdt/gerrit,GerritCodeReview/gerrit-attic,bootstraponline-archive/gerrit-mirror,ashang/aaron-gerrit,thesamet/gerrit,WANdisco/gerrit,hdost/gerrit,GerritCodeReview/gerrit,bpollack/gerrit,Seinlin/gerrit,TonyChai24/test,anminhsu/gerrit,zommarin/gerrit,renchaorevee/gerrit,thesamet/gerrit,sudosurootdev/gerrit,qtproject/qtqa-gerrit,1yvT0s/gerrit,Saulis/gerrit,joshuawilson/merrit,basilgor/gerrit,GerritCodeReview/gerrit,m1kah/gerrit-contributions,rtyley/mini-git-server,TonyChai24/test,thinkernel/gerrit,jackminicloud/test,qtproject/qtqa-gerrit,supriyantomaftuh/gerrit,hdost/gerrit,GerritCodeReview/gerrit-attic,hdost/gerrit,CandyShop/gerrit,Distrotech/gerrit,Seinlin/gerrit,quyixia/gerrit,sudosurootdev/gerrit,Distrotech/gerrit,cjh1/gerrit,austinchic/Gerrit,quyixia/gerrit,hdost/gerrit,evanchueng/gerrit,anminhsu/gerrit,CandyShop/gerrit,netroby/gerrit,GerritCodeReview/gerrit,jackminicloud/test,Overruler/gerrit,catrope/gerrit,1yvT0s/gerrit,ckamm/gerrit,ckamm/gerrit,anminhsu/gerrit,atdt/gerrit,gracefullife/gerrit,anminhsu/gerrit,thinkernel/gerrit,rtyley/mini-git-server,hdost/gerrit,TonyChai24/test,GerritCodeReview/gerrit,gracefullife/gerrit,thinkernel/gerrit,midnightradio/gerrit,thesamet/gerrit,basilgor/gerrit,midnightradio/gerrit,MerritCR/merrit,atdt/gerrit,renchaorevee/gerrit,zommarin/gerrit,keerath/gerrit_newssh,hdost/gerrit,gracefullife/gerrit,joshuawilson/merrit,jeblair/gerrit,Distrotech/gerrit,anminhsu/gerrit,quyixia/gerrit,bpollack/gerrit,netroby/gerrit,renchaorevee/gerrit,GerritCodeReview/gerrit,gracefullife/gerrit,pkdevbox/gerrit,pkdevbox/gerrit,WANdisco/gerrit,teamblueridge/gerrit,ashang/aaron-gerrit,duboisf/gerrit,cjh1/gerrit,duboisf/gerrit,quyixia/gerrit,supriyantomaftuh/gerrit,evanchueng/gerrit,zommarin/gerrit,gcoders/gerrit,netroby/gerrit,ashang/aaron-gerrit,austinchic/Gerrit,gerrit-review/gerrit,MerritCR/merrit,quyixia/gerrit,CandyShop/gerrit,ckamm/gerrit,Team-OctOS/host_gerrit,teamblueridge/gerrit,netroby/gerrit,Team-OctOS/host_gerrit,gerrit-review/gerrit,cjh1/gerrit,duboisf/gerrit,bpollack/gerrit,m1kah/gerrit-contributions,evanchueng/gerrit,supriyantomaftuh/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,joshuawilson/merrit,basilgor/gerrit,ashang/aaron-gerrit,Overruler/gerrit,midnightradio/gerrit,jackminicloud/test,MerritCR/merrit,sudosurootdev/gerrit,keerath/gerrit_newssh,supriyantomaftuh/gerrit,Overruler/gerrit,Team-OctOS/host_gerrit,1yvT0s/gerrit,gcoders/gerrit,quyixia/gerrit,Saulis/gerrit,TonyChai24/test,skurfuerst/gerrit,pkdevbox/gerrit,midnightradio/gerrit,Seinlin/gerrit,teamblueridge/gerrit,skurfuerst/gerrit,cjh1/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,dwhipstock/gerrit,Seinlin/gerrit,CandyShop/gerrit,teamblueridge/gerrit,jackminicloud/test,Team-OctOS/host_gerrit,thesamet/gerrit,1yvT0s/gerrit,gerrit-review/gerrit,Overruler/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,pkdevbox/gerrit,thesamet/gerrit,Saulis/gerrit,renchaorevee/gerrit,dwhipstock/gerrit,joshuawilson/merrit,ckamm/gerrit,makholm/gerrit-ceremony,pkdevbox/gerrit,MerritCR/merrit,pkdevbox/gerrit,renchaorevee/gerrit,Distrotech/gerrit,dwhipstock/gerrit,qtproject/qtqa-gerrit,quyixia/gerrit,MerritCR/merrit,MerritCR/merrit,evanchueng/gerrit,gcoders/gerrit,thesamet/gerrit,bootstraponline-archive/gerrit-mirror,supriyantomaftuh/gerrit,bpollack/gerrit,joshuawilson/merrit,bootstraponline-archive/gerrit-mirror,TonyChai24/test,WANdisco/gerrit,gcoders/gerrit,jackminicloud/test,jeblair/gerrit,sudosurootdev/gerrit,Team-OctOS/host_gerrit,skurfuerst/gerrit,Team-OctOS/host_gerrit,sudosurootdev/gerrit,dwhipstock/gerrit,pkdevbox/gerrit,CandyShop/gerrit,midnightradio/gerrit,catrope/gerrit,ashang/aaron-gerrit,bootstraponline-archive/gerrit-mirror,bpollack/gerrit,makholm/gerrit-ceremony,jeblair/gerrit,netroby/gerrit,Saulis/gerrit,netroby/gerrit,joshuawilson/merrit,thinkernel/gerrit,supriyantomaftuh/gerrit,m1kah/gerrit-contributions,m1kah/gerrit-contributions,Saulis/gerrit,zommarin/gerrit,dwhipstock/gerrit,gerrit-review/gerrit,ckamm/gerrit,atdt/gerrit,MerritCR/merrit,gerrit-review/gerrit,Team-OctOS/host_gerrit,MerritCR/merrit,gerrit-review/gerrit,Saulis/gerrit,1yvT0s/gerrit,netroby/gerrit,austinchic/Gerrit,WANdisco/gerrit,keerath/gerrit_newssh,WANdisco/gerrit,skurfuerst/gerrit,Overruler/gerrit,thinkernel/gerrit,TonyChai24/test,jackminicloud/test,jackminicloud/test,thesamet/gerrit,joshuawilson/merrit,makholm/gerrit-ceremony,gerrit-review/gerrit,Distrotech/gerrit,Distrotech/gerrit,jeblair/gerrit,dwhipstock/gerrit,Seinlin/gerrit,basilgor/gerrit,thinkernel/gerrit,renchaorevee/gerrit,austinchic/Gerrit,GerritCodeReview/gerrit,keerath/gerrit_newssh